On MetW this is handled by fair behavior.
When playing a tournament game, players use country flags (but you could signal it using any other way). While in game with flags, you are not allowed to lurk.
If someone does, he's reported and banned from the tournament.
What does "lurk" here mean:
1) that anyone who participates in the League is not allowed to watch the match
2) that anyone who particpates in the League is allowed to watch the match, but prohibited to saying anything about it
3) that no one is allowed to watch the match
4) that everyone is allowed to watch, but prohibited to say anything about it
5) none of the above, write your answer ____________________

If someone does, he's reported and banned from the tournament.
This would mean that cases 1 and 2 are not the correct answers which leaves 3 and 4... and 5 of course

To me case 3 seems a bit too strict, so I would go for case 4) that everyone is allowed to watch, but prohibited to say anything about it. That's my final answer!
Did I win a million dollars?
